Abstract: To provide a tool changer of a machine tool capable of preventing chips from scattering to the outside of the machine from an opening of a cover to adhere to a sliding portion or a gripper portion during tool change. A tool magazine 42 holding a large number of tools is disposed on a machine outer side of a cover 62 disposed to surround a machining area of a third spindle 6. The cover 62 has a tool through hole 62c from which a tool held by a tool holding part 6c of the third spindle 6 is protruded to the machine outer side of the cover 62. Tool change is performed while the tool is protruded to the machine outer side from the tool through hole 62c and the tool through hole 62c is closed by the tool holding part 6c.

Abstract: To provide a tool changer of a machine tool capable of preventing chips from scattering to the outside of the machine from an opening of a cover to adhere to a sliding portion or a gripper portion during tool change. A tool magazine 42 holding a large number of tools is disposed on a machine outer side of a cover 62 disposed to surround a machining area of a third spindle 6. The cover 62 has a tool through hole 62c from which a tool held by a tool holding part 6c of the third spindle 6 is protruded to the machine outer side of the cover 62. Tool change is performed while the tool is protruded to the machine outer side from the tool through hole 62c and the tool through hole 62c is closed by the tool holding part 6c.